angular.module('startContainer', ['ui.bootstrap'])
.controller('StartContainerController', ['$scope', '$state', 'Container', 'Image', 'Messages', 'containernameFilter', 'errorMsgFilter', 'ViewSpinner',
function ($scope, $state, Container, Image, Messages, containernameFilter, errorMsgFilter, ViewSpinner) {
  $scope.template = 'app/components/startContainer/startcontainer.html';

  Container.query({all: 1}, function (d) {
    $scope.containerNames = d.map(function (container) {
      return containernameFilter(container);
    });
  });

  $scope.config = {
    Env: [],
    Labels: [],
    Volumes: [],
    SecurityOpts: [],
    HostConfig: {
      PortBindings: [],
      Binds: [],
      Links: [],
      Dns: [],
      DnsSearch: [],
      VolumesFrom: [],
      CapAdd: [],
      CapDrop: [],
      Devices: [],
      LxcConf: [],
      ExtraHosts: []
    }
  };

  $scope.menuStatus = {
    containerOpen: true,
    hostConfigOpen: false
  };

  function failedRequestHandler(e, Messages) {
    Messages.error('Error', errorMsgFilter(e));
  }

  function rmEmptyKeys(col) {
    for (var key in col) {
      if (col[key] === null || col[key] === undefined || col[key] === '' || ($.isPlainObject(col[key]) && $.isEmptyObject(col[key])) || col[key].length === 0) {
        delete col[key];
      }
    }
  }

  function getNames(arr) {
    return arr.map(function (item) {
      return item.name;
    });
  }

  function createContainer(config) {
    Container.create(config, function (d) {
      if (d.Id) {
        var reqBody = config.HostConfig || {};
        reqBody.id = d.Id;
        Container.start(reqBody, function (cd) {
          if (cd.id) {
            ViewSpinner.stop();
            Messages.send('Container Started', d.Id);
            $state.go('container', {id: d.Id}, {reload: true});
          } else {
            ViewSpinner.stop();
            failedRequestHandler(cd, Messages);
            Container.remove({id: d.Id}, function () {
              Messages.send('Container Removed', d.Id);
            });
          }
        }, function (e) {
          ViewSpinner.stop();
          failedRequestHandler(e, Messages);
        });
      } else {
        ViewSpinner.stop();
        failedRequestHandler(d, Messages);
      }
    }, function (e) {
      ViewSpinner.stop();
      failedRequestHandler(e, Messages);
    });
  }

  $scope.create = function () {
    $('#create-modal').modal('hide');
    ViewSpinner.spin();

    var config = angular.copy($scope.config);

    if (config.Cmd && config.Cmd[0] === "[") {
      config.Cmd = angular.fromJson(config.Cmd);
    } else if (config.Cmd) {
      config.Cmd = config.Cmd.split(' ');
    }

    config.Env = config.Env.map(function (envar) {
      return envar.name + '=' + envar.value;
    });
    var labels = {};
    config.Labels = config.Labels.forEach(function(label) {
      labels[label.key] = label.value;
    });
    config.Labels = labels;

    config.Volumes = getNames(config.Volumes);
    config.SecurityOpts = getNames(config.SecurityOpts);

    config.HostConfig.VolumesFrom = getNames(config.HostConfig.VolumesFrom);
    config.HostConfig.Binds = getNames(config.HostConfig.Binds);
    config.HostConfig.Links = getNames(config.HostConfig.Links);
    config.HostConfig.Dns = getNames(config.HostConfig.Dns);
    config.HostConfig.DnsSearch = getNames(config.HostConfig.DnsSearch);
    config.HostConfig.CapAdd = getNames(config.HostConfig.CapAdd);
    config.HostConfig.CapDrop = getNames(config.HostConfig.CapDrop);
    config.HostConfig.LxcConf = config.HostConfig.LxcConf.reduce(function (prev, cur, idx) {
      prev[cur.name] = cur.value;
      return prev;
    }, {});
    config.HostConfig.ExtraHosts = config.HostConfig.ExtraHosts.map(function (entry) {
      return entry.host + ':' + entry.ip;
    });

    var ExposedPorts = {};
    var PortBindings = {};
    config.HostConfig.PortBindings.forEach(function (portBinding) {
      var intPort = portBinding.intPort + "/tcp";
      if (portBinding.protocol === "udp") {
        intPort = portBinding.intPort + "/udp";
      }
      var binding = {
        HostIp: portBinding.ip,
        HostPort: portBinding.extPort
      };
      if (portBinding.intPort) {
        ExposedPorts[intPort] = {};
        if (intPort in PortBindings) {
          PortBindings[intPort].push(binding);
        } else {
          PortBindings[intPort] = [binding];
        }
      } else {
        Messages.send('Warning', 'Internal port must be specified for PortBindings');
      }
    });
    config.ExposedPorts = ExposedPorts;
    config.HostConfig.PortBindings = PortBindings;

    // Remove empty fields from the request to avoid overriding defaults
    rmEmptyKeys(config.HostConfig);
    rmEmptyKeys(config);

    var image = _.toLower(config.Image);
    var imageNameAndTag = image.split(':');
    var imageConfig = {
      fromImage: imageNameAndTag[0],
      tag: imageNameAndTag[1] ? imageNameAndTag[1] : 'latest',
    };

    Image.create(imageConfig, function (data) {
        var err = data.length > 0 && data[data.length - 1].hasOwnProperty('error');
        if (err) {
          var detail = data[data.length - 1];
          ViewSpinner.stop();
          Messages.error('Error', detail.error);
        } else {
          Messages.send("Image successfully pulled", image);
          createContainer(config);
        }
    }, function (e) {
      ViewSpinner.stop();
      Messages.error('Error', 'Unable to pull image ' + image);
    });
  };

  $scope.addEntry = function (array, entry) {
    array.push(entry);
  };
  $scope.rmEntry = function (array, entry) {
    var idx = array.indexOf(entry);
    array.splice(idx, 1);
  };
}]);